19. Polarization experiments provide evidence that (A) light is a longitudinal wave. (B) light is a stream of particles. (C) light is a transverse wave. (D) the polarized light is monochromatic. (E) polarized light propagates faster than un-polarized light.

6. Two far apart charged metal spheres of radius R₁ and R₂ are connected by a long wire in electrostatic equilibrium. The electric potentials and the surface charge densities on them are V₁, V₂ and σ₁, σ₂, respectively. Choose the correct statement. (A) V₁ ＞ V₂, σ₁ ＞ σ₂ (B) V₁ ＜ V₂, σ₁ ＜ σ₂ (C) (D) V₁ = V₂, R₁σ₁ = R₂σ₂ (E) R₁V₁ = R₂V₂, σ₁ = σ₂

19. Polarization experiments provide evidence that
(A) light is a longitudinal wave.
(B) light is a stream of particles.
(C) light is a transverse wave.
(D) the polarized light is monochromatic.
(E) polarized light propagates faster than un-polarized light.

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